CN203400949U - Forward extrusion die for aluminum alloy circular tube - Google Patents
Forward extrusion die for aluminum alloy circular tube Download PDFInfo
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- CN203400949U CN203400949U CN201320379382.4U CN201320379382U CN203400949U CN 203400949 U CN203400949 U CN 203400949U CN 201320379382 U CN201320379382 U CN 201320379382U CN 203400949 U CN203400949 U CN 203400949U
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- welding chamber
- seam chamber
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Abstract
The utility model provides a forward extrusion die for an aluminum alloy circular tube. The forward extrusion die comprises an upper die and a lower die, wherein the upper die is provided with a flow dividing bridge and a flow dividing hole; the lower die is provided with a die hole and a welding chamber; the welding chamber is composed of a first welding chamber and a second welding chamber downwards extending from the bottom of the first welding chamber; the first welding chamber, the second welding chamber and the die hole are coaxial; a first transition angle from the side wall of the first welding chamber to the bottom wall of the first welding chamber, and a second transition angle from the side wall of the second welding chamber to the bottom wall of the second welding chamber are circular angles; an inlet of the die hole is conical. With the adoption of the die, an aluminum alloy circular tube sectional material without welding line strips on the surface can be produced on a forward extruder; compared with an existing forward extrusion and casting rod threading and extrusion process, the forward extrusion die for the aluminum alloy circular tube has the advantages of low production cost, large range of produced circular tube sectional materials and the like.
Description
Technical field
The utility model relates to extrusion die, more particularly, relates to a kind of forward extrusion mould of tube and pipe of aluminium alloy.
Background technology
Traditional tube and pipe of aluminium alloy forward extrusion mould, during extruding, the solid ingot casting of metal is divided into three to four strands through shunting bridge, and to flow to seam indoor for metal afterwards, under HTHP, makes multiply metal flow through the seam nib of flowing through again, and final production goes out extrude tubes.Be squeezed during seam under the shunting bridge impact of power, extrusion temperature etc. of metal, the bad metal surface that makes of welding quality produces striped.
In order to eliminate Surface of profile seam lines line, some producers produce tube and pipe of aluminium alloy on indirect extrusion machine, but the method significantly improves production cost, also have some producers to adopt casting rod perforation extruding, but the pipe that the method is produced are limited in scope.
Summary of the invention
The purpose of this utility model is to provide a kind of forward extrusion mould of tube and pipe of aluminium alloy, so that while producing aluminum alloy round pipe profile on forward extrusion machine, also can avoid producing seam lines line at made Surface of profile.
For reaching above-mentioned purpose, a kind of tube and pipe of aluminium alloy forward extrusion mould that the utility model provides comprises upper die and lower die, patrix is provided with shunting bridge and tap hole, counterdie is provided with nib and seam chamber, wherein, described seam chamber is comprised of the first seam chamber and the second seam chamber of extending to form downwards from the bottom of the first seam chamber, the first described seam chamber, the second seam chamber and nib are coaxial, First Transition angle from the sidewall of the first seam chamber to the diapire of the first seam chamber, and the second transition angle from the sidewall of the second seam chamber to the diapire of the second seam chamber is fillet, it is conical that the entrance of described nib is.Conical nib entrance, has improved the static pressure of metal, has strengthened the effect of metal seam, can effectively reduce the generation of pipe surface seam lines line.The double-deck fillet that the first seam chamber and the second seam chamber form (large R angle) seam chamber, can successively twice axial compression power be converted to horizontal extruding force, when effectively having improved the mobility of metal flow, also improved metal flow seam pressure, for the striped of elimination pipe surface because of the generation of seam line plays a key effect.
In above-mentioned tube and pipe of aluminium alloy forward extrusion mould, preferably, the radius at First Transition angle equates with the height of the first seam chamber, and the radius at the second transition angle equates with the height of the second seam chamber.
In above-mentioned tube and pipe of aluminium alloy forward extrusion mould, preferably, the end surface shape of the second described seam chamber is identical with the end surface shape of described shunting bridge.
In above-mentioned tube and pipe of aluminium alloy forward extrusion mould, preferably, the tapering of the entrance of nib is 5 degree.
Adopt the utility model mould, can on forward extrusion machine, produce the aluminum alloy round pipe profile that Surface of profile does not have seam lines line, compared to existing reverse extrusion and casting rod perforation extrusion process, there is production cost low, the advantage such as producible pipe section bar scope is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of the patrix of an embodiment tube and pipe of aluminium alloy forward extrusion mould;
Fig. 2 is the structural representation of its counterdie;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the enlarged drawing of B portion in Fig. 3;
Fig. 5 is the structural representation after upper die and lower die assembling.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1-5, this tube and pipe of aluminium alloy forward extrusion mould comprises patrix 1 and counterdie 2, and patrix 1 is provided with shunting bridge 1b and tap hole 1a, and counterdie 2 is provided with nib 2c and chamber is closed in double-deck large R fillet welding.The large R fillet welding of this bilayer is closed chamber and is comprised of the first seam chamber 2a and the second seam chamber 2b of extending to form downwards from the bottom of the first seam chamber 2a, the first seam chamber 2a, the second seam chamber 2b and nib 2c are coaxial, First Transition angle 2f from the sidewall of the first seam chamber 2a to the diapire of the first seam chamber 2a is fillet, and the second transition angle 2g from the sidewall of the second seam chamber 2b to the diapire of the second seam chamber 2b is also fillet.
In this embodiment, the radius of First Transition angle 2f equates with the height of the first seam chamber 2a, and the radius of the second transition angle 2g equates with the height of the second seam chamber 2b.Make to form respectively large R angle at the first seam chamber 2a and the second seam chamber 2b, the axial compression power to metal flow is converted to horizontal extruding force, effectively improved the mobility of metal flow, and improved metal flow seam pressure.But in the utility model, the radius of First Transition angle 2f and the second transition angle 2g is not limited to this.
In Fig. 2,2d is the outline line of the second seam chamber 2b outer edge, and 2e is the outline line of the first seam chamber 2a outer edge, can find out, in this embodiment, the end surface shape of the second seam chamber 2b is cross, identical with the end surface shape with shunting bridge 1b on patrix 1.
Patrix 1 is identical with the combination of existing mold with the combination of counterdie 2, also adopts fixing structure, shop bolt and lock-screw to realize combination, and the 2h in figure is fixing structure.
After patrix 1 and counterdie 2 combinations, the second seam chamber 2b and the corresponding (see figure 5) of shunting bridge 1b.During extruding, metal is shunted bridge 1b and is cut apart, from four tap hole 1a enter the first seam chamber 2a, by First Transition angle, 2f is converted to horizontal extruding force by axial compression power, then enters criss-cross the second seam chamber 2b, by the second transition angle 2g, again axial compression power is converted to horizontal extruding force, by twice conversion, when effectively having improved the mobility of metal flow, also improved metal flow seam pressure, for the striped of elimination pipe surface because of the generation of seam line plays a key effect.
It is conical that the entrance of nib 2c is, and this design has improved the static pressure of metal, has strengthened the effect of metal seam, can effectively reduce the generation of pipe surface seam lines line.In the present embodiment, the concrete tapering of the entrance of nib 2c (seeing α in Fig. 4) is 5 degree.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. tube and pipe of aluminium alloy forward extrusion mould, comprise patrix (1) and counterdie (2), patrix is provided with shunting bridge (1b) and tap hole (1a), counterdie is provided with nib (2c) and seam chamber, it is characterized in that: described seam chamber is comprised of the first seam chamber (2a) and the second seam chamber (2b) of extending to form downwards from the bottom of the first seam chamber (2a), the first described seam chamber (2a), the second seam chamber (2b) and nib (2c) are coaxial, First Transition angle (2f) from the sidewall of the first seam chamber (2a) to the diapire of the first seam chamber, and the second transition angle (2g) from the sidewall of the second seam chamber (2b) to the diapire of the second seam chamber is fillet, it is conical that the entrance of described nib (2c) is.
2. tube and pipe of aluminium alloy forward extrusion mould according to claim 1, it is characterized in that: the radius of First Transition angle (2f) equates with the height of the first seam chamber (2a), the radius at the second transition angle (2g) equates with the height of the second seam chamber (2b).
3. tube and pipe of aluminium alloy forward extrusion mould according to claim 1, is characterized in that: the end surface shape of the second described seam chamber (2b) is identical with the end surface shape of described shunting bridge (1b).
4. tube and pipe of aluminium alloy forward extrusion mould according to claim 1, is characterized in that: the tapering of the entrance of nib (2c) is 5 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320379382.4U CN203400949U (en) | 2013-06-28 | 2013-06-28 | Forward extrusion die for aluminum alloy circular tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320379382.4U CN203400949U (en) | 2013-06-28 | 2013-06-28 | Forward extrusion die for aluminum alloy circular tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203400949U true CN203400949U (en) | 2014-01-22 |
Family
ID=49936892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320379382.4U Expired - Fee Related CN203400949U (en) | 2013-06-28 | 2013-06-28 | Forward extrusion die for aluminum alloy circular tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203400949U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465713A (en) * | 2018-02-09 | 2018-08-31 | 深圳市华加日西林实业有限公司 | The processing technology and aluminium alloy extrusions of 7075 aluminium alloy extrusions |
| CN109794592A (en) * | 2018-12-24 | 2019-05-24 | 苏州市永利成模具制造有限公司 | One kind reducing crop end method for round tube |
| CN115139056A (en) * | 2022-02-10 | 2022-10-04 | 龙口市丛林铝材有限公司 | Extrusion production process of special wide aluminum alloy thin plate profile |
-
2013
- 2013-06-28 CN CN201320379382.4U patent/CN203400949U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465713A (en) * | 2018-02-09 | 2018-08-31 | 深圳市华加日西林实业有限公司 | The processing technology and aluminium alloy extrusions of 7075 aluminium alloy extrusions |
| CN109794592A (en) * | 2018-12-24 | 2019-05-24 | 苏州市永利成模具制造有限公司 | One kind reducing crop end method for round tube |
| CN115139056A (en) * | 2022-02-10 | 2022-10-04 | 龙口市丛林铝材有限公司 | Extrusion production process of special wide aluminum alloy thin plate profile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20180628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |